Oiling system



June 17, 1930.

H. L, HORNING oILING SYSTEM Filed oct. 22. 1924 Patented June 17, 1930 UNirED `STATES PATENT OFFICE HARRY L. HORNIN'G',y OF WAUKESHA, WISCONSIN, .ASSGNOR TO WAUKESI-IA MOTOR CO., OF WAUKESHA, WSCONSIN, A. CORPORATION OF WISCONSIN I yOILNG SYSTEM Application filed October 22,1924. Serial No. 745,188.

My invention relates to internal combustion engines, and more specifically to animproved lubrication system therefor. l

Among the primary objects and advantages of the invention may be enumerated the effective cleaning of all oil supplied to the engine parts by the pump, control of leakage, and a maximum of convenience in keeping the'parts clean, and replacing the oil from time to time during service.

In the accompanying` drawings,

Fig. 1 is a side elevation of an engine embodying the principles of my invention;

Fig. 2 is a transverse section through part of the oiling system;

Fig. 3 is a much enlarged fragmentary detail substantially on line 3-3 of Fig. 2; and i Fig. i is a similar section of a modified form.

In the embodiment of the invention selected for illustration, the oil pan 10 is bolted to the bottom of the body 12 as usual, and is provided with a diaphragm 14rhaving a central aperture dened by downturned lip 16 discharging into a cup-shaped screen 18. This screen preferably rests on a removable plate 2O in the bottom of the oil pan for convenience in removing and cleaning the same. The casing is enlarged laterally at 22 to accommodate the control rod 2li carrying a conical valve 26 at its lower end for use in draining the crank case. Compression spring 2,8 presses downwardly on this l rod to maintain itsecurely seated at all times, and the upper end of the rod terminates in an operating handle 30 conveniently accessible from above by reaching down be-y side the engine. This construction elimi nates the necessity of crawling under 'the car to drain the oil.

The oil returning from the lubricated parts flows over diaphragm le, into and through screen 18, and is taken up by the pump intake 32, which is a simple tube fastened in the engine casting 12 and entending down Vclose to the bottom of the oil pan adjacent the drain cock 26. The flow when the crank case is drained, will tend to scour away any fine sediment lying on the bottom ofthe oil pan near the drain cock.

From tube 32 the oil passes through a short horizontal passageway 34- formed in the body 12, and a vertical riser 36, to the approximate level of the pump body 38. A short horizontal passage i0 now conveys it rearwardly into a registering aperture in body 38, communicating with the transverse passage 42, which last vnamed passage delivers the oil to the pump proper,

The pump proper comprises, in this instance, gears la and 46,'gear a6 rotating on stub shaft 48 and gear 44 on drive shaftl 50 extending through and beyond the body 38 to carry the" spiral toothed gear 52 meshing with a companion gear 54C in the cam shaft 56. The body 38 carries a cup-shaped projection 58 which will accumulate oil from the spray thrown by the engine, into which the teeth of gear 52 will dip to lubricate the transmission at this point.

The oil leaves the pump through passageway 60 communicating with passageway 62 in the body l2, which last named passageway delivers through a lateral aperture into cup 64:. i

Both body 38 and cup 6d` are removably mounted in suitable lateral apertures in body V12. The pump body 38 carries a cover plate 66 retaining the pump element proper, so that the entire pump and body can bewithdrawn as a unit for separate inspection or repair. Similarly, cup 64 and the screen 68 carried thereby may be removed for cleaning the screen. side of the pump may be materially finer than screen 18, and as it is the final cleaning means before the oil passes through the en- 5 gine parts, a reasonable capacity for the accumulation of sediment at this point, and a maximum of convenience to encourage cleaning the same at proper intervals, are important items. Cup 64 istapered at 70, and the screen 68 terminates in a lip 72 turned back over the edge of the cup and held in .place by a retaining ring 74. It is a very simple matter to loosen the studs holding cup 64, lift it out remove ring 7eand screen 68 from the cup and iush and This screen on the discharge i clean both cup and screen of magnitude of two thousandths of an inch.

thoroughly before replacing them.

The mouth of cup 64 delivers the oil to the engine parts proper through any suitable system of conduits. I have illustrated a chamber 76 formed integrally in body l2,

from which the oil leaves for the engine parts through passageway 78. Ay suitable pressure relief valve may be provided at Vany point in this part of the system. have illustrated the same 'at 80.

To eliminate difculties dueV to leakage where the oil conduits pass from one removable part to an yadjoining part, I preferably` proceed as follows f Cup 64 and body 3,8 are machined for easy sliding fit in'their respective apertures. The

' ends of passage 60 are counterbored to form i Y Fig. 4,v the discharge endy but not the intake end of conduit O'is given a little extra Yelearance by flattening body 38, as clearly indicated in Fig.4 by an amount of the order This assures an oil film between the opposed surfaces of parts 12 andr 38' at all times. Bearing in mind the Vsurface tension phenomena in a thin film of oil, which will carry loads of several hundred pounds per square c inch between moving surfaces without breaking, it will be. apparent that the suction of the pump ydeveloped in passage 40 will never f be enoughto suck any air into the intake .passage of the pump'and interrupt the action thereof. Even plugging pipe 32 would merely interrupt the supply of oil to the engine, as it would in any lubricating system, without developing sufficient suction to pull the oil ulm out from between parts 12 and 38 and let the pump get air bound;k f

yWithout further elaboration, the foregoing will so fully'eXplain the gist of my invention, that others may, by applying -current knowledge, readily adapt the same `for ifm-1,078

the cam shaft, and a cup projecting from' said assembly under the point of meshing engagement to maintain an oil bath.

2. In an internal combustion engine, in combination, a casting having a lateral aperture, a pump having a cylindrical body seated in said aperture, fiange and gasket means for fastening said pumpin place and sealing against leakage of oil, and lateral passages ,inv the cylindrical body Vof said `for conveying oil to andfroml said pump, said body being flattened to permit 'a slight leak- `age in the discharge'passage'.

Y 3. In a device of theclass described, an

apertured body, an 'insert fitting in said aperture, conduits inthe insert-and body registering to form a passageway, one ofsald conduitshaving a conical counterbore, `and a compressible annulus in said counterbore bearing Aagainst the opposite surface. to `form a seal, said.' annulus being formed of material f tending to swell slightly butnot deteriorate in contact with'the fluid in said passageway.

In witness'whereof, I hereunto subscribe.

my name this 17th day of October, 1924.

, HARRY L. HORNING.

use under varying conditions of service, f

without eliminating certain features 'which f may properly be said to'constitu'te the essential items of novelty involved, which items are intended to be defined and secured to me by the following claims.

I claim 1. In an internal combustion enginefhavj Y ing a cam shaft and side wall-outside the same, in combination, a unitary pump assembly set man vaperture in said side wall, drlveV means on said assembly meshing with 

